Convert OST to PST Process - Version 2.2 As you know Microsoft Exchange Server locally stores its data in OST file. When Exchange Server gets crashed then your OST file gets inaccessible. At this situation you need to get PCVITA OST converter software to recover OST file and then move to convert OST to PST process. With this convert OST to PST process you can easily convert entire OST to PST items like emails, calendar, journals, notes, contacts, tasks etc. The OST to PST process tool is supportive to Microsoft Exchange 5.0, 5.5, 2000, 2003, 2007 and 2010. Try our free demo to convert 5 OST to PST items. For full conversion you can easily buy our full license version which is available at just $99 only.